v0.9.8 (Mar 21, 2018)

Overview of changes

• Basic jsonb serialization and de-serialization to support a document datatype
• Lots of performance improvements
  • Improved performance when running on 2 core machines with auto-tuning of various gflags
  • Reduced lock contention
  • Eliminated unnecessary memory copies
• YugaByte DB can now run on ZFS filesystem
• Initial secondary index read/write support
• Handling large requests in Redis and memory protection on violating max command size

Key commits

• [cdf48e3] Fix hybrid time going backwards because of logical component overflow
• [0bf401e] Add RPC read buffers to MemTracker
• [451b7f8] Misc client template simplifications
• [e27d429] #103 Do not crash due to block size mismatch on ZFS
• [218ddcd] Remove log spew from TabletServiceImpl::Read
• [956deb2] #101 pick better auto-defaults for max number of compactions
• [28ca802] Keep java client API to pass in number of tablets for redis table creation.
• [e321311] Secondary index read/write
• [e463718] Fix macOS build issue in physical_time.cc
• [f4a1c89] Fix build in pg_server_main.cc
• [5a91590] #1 Enable building on gcc 7 on Ubuntu 17.10
• [6f9bdef] Add version info to log file including build timestamp and git
• [f9bafcc] New clock abstraction layer
• [2826097] Change defaults on server side for some flags.
• [0440305] Fix missing comma in ybctl for pgsql service display.
• [a18d393] Remove number of tablets from redis table creation client APIs.
• [26f909e] RPC support for processing commands from Postgresql clients.
• [40786a4] #97: Fix for Fatal failure on scaling down kubernetes cluster
• [a60c81f] Report the stored log entry header CRC in the CRC mismatch error message.
• [4c6baeb] Remove semi-colon requirement after "begin transaction" plus misc code cleanup.
• [5104ad2] #98: Remove pointer to TableReader from MultiLevelIndexReader
• [4327930] Quick fix of SegFault during reads.
• [44640b0] Avoid copying of QLValue and QLValuePB.
• [960f19f] Do not print a failure message when remote bootstrap is started successfully
• [5b16cf1] Send num shards parameter to master from yb-ctl.
• [c311ad3] Master removal needs to remove yb-data contents for shell mode.
• [2726eac] Resolving bug where the placement info that gets allocated to a master/tserver is off by one respect to the command line argument.
• [280fdc0] Fix ScopedPendingOperation to return Status::Busy error when unavailable.
• [d16bc28] Backoff exponentially for server too busy errors
• [e0b78dc] Set upperbound for intent iterator in IntentAwareIterator.
• [7147469] Miscellaneous test improvements, and better diagnostics before a fatal error in MvccManager::AddPending
• [6be69a8] Handle case when read buffer is full and command is not fully transferred yet
• [72de5cb] Put ValueType::kIntentPrefix's before all non-intent ValueTypes.
• [ed45995] Handle dependencies for libraries in mac_library_packager.py
• [556f710] TSAN Race Condition between Register and Load Balancer.
• [e2f4b9b] Fix the increment of SQLProcessor_ExecuteRequest metric.
• [2871820] #93 Fix trying to read ahead of the log while preparing peer request
• [b1d4d7f] #90: Reduce lock contention in TabletInvoker::IsLocalCall
• [0250c13] #88: Fix return value from XX and NX options
• [63363df] Basic jsonb serialization and de-serialization code.
• [897a925] #86: Accept lowercase options for SET
• [679b57b] Fix bug timezone parsing for timestamp literals
• [4902d06] Allow flushing all tablets of a given table